JPH07326439A - Structure for attaching flat cable to printed board and connector for printed board - Google Patents

Abstract

PURPOSE:To simplify the structure of the connecting end portion of a flat cable. CONSTITUTION:A printed board 1 is provided with a signal contact 11 of a signal circuit terminal and an earth contact 12 of an earth circuit. A holder 40 is soldered to the earth contact 12 and a connector 2 is secured to the printed board 1. A terminal 30 is securely connected to the signal contact 11 by soldering. The connecting end portion of a flat cable 60 is inserted between the terminal 30 and the holder 40 and a sliding member 50 is pressed in between the terminal 30 and the holder 40. Therefore, a conductor 62 exposed to one side of the flat cable 60 is connected to the terminal 30 and shield foil 64 exposed to the other side is connected to the holder 40. So the shield foil 64 is connected to the earth circuit from the earth contact 12 via a holder 2 and electric charge accumulating on the shield foil 64 is passed to the earth circuit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a flat cable having a shield function on a printed circuit board.

[0002]

2. Description of the Related Art For example, a flat cable mounted in a narrow mounting space such as a liquid crystal display panel may have a shield function in order to prevent noise and malfunction. As a mounting structure for connecting a flat cable having this shield function to a printed circuit board, conventionally, a connector is fixed to the printed circuit board and the flat cable is fitted into this connector.

In this conventional flat cable 140, as shown in FIG. 22, a plurality of foil-shaped conductive wires 142 for signal transmission are arranged in parallel on the upper surface of an insulating first insulating sheet 141. , A second insulating sheet 143 on the upper surface of the conductive wire 142, and a conductive shield foil 1 such as aluminum and copper.
44 and the third insulating sheet 145 are sequentially laminated and adhered. Then, at the connection end of the flat cable 140, as shown in FIGS.
3 is shorter than the first insulating sheet 141, and the conductive wire 142 is exposed on the upper surface side. Although the sheet-shaped shield foil 144 is also shortened similarly to the second insulating sheet, a shield foil end piece 144a having the same length as the conductive wire 142 is extended to one side in the width direction. And is arranged in parallel with the conductive wire 142 on the upper surface of the first insulating sheet 141. That is, of the plurality of conductors arranged in parallel on the upper surface of the first insulating sheet 141, the outermost (upper in FIG. 21) conductive line 142 is the shield foil end piece 144.
It is a.

Although not shown on the printed circuit board,
A plurality of signal contacts provided at the signal circuit terminal are provided in parallel, and a ground contact provided at the terminal of the ground circuit is provided alongside the signal contacts. That is, of the plurality of contacts arranged in parallel on the printed circuit board, the outermost contact is the ground contact. Further, a holder mounting portion is provided on the printed circuit board, and an end portion of the holder for firmly fixing to the substrate mounted on the connector is fixed to the holder mounting portion by solder.

The connector fixed to this printed circuit board has a plurality of terminals mounted in parallel in the housing corresponding to the respective signal contacts and ground contacts, and soldered in a state of contacting each contact. In addition to the fixing at the holder mounting portion described above, the connector is fixed on the printed circuit board.

The connection between the flat cable 140 and the connector is performed by inserting the connection end which is one end of the flat cable 140 into the connector and exposing each conductive wire 142 and the shield exposed on the first insulating sheet 141. Foil end piece 1
44a is elastically connected to each terminal and connected.

[0007]

However, in this conventional configuration, the shield foil 1 is disposed on the upper surface of the second insulating sheet 143 at the connection end of the flat cable 140.
44, it is necessary to arrange only the shield foil end pieces 144a on the first insulating sheet 141 in parallel with the conductive lines 142 at the same pitch. The difficult work of sticking on the insulating sheet 141 was required.

Further, since the shield foil end piece 144a is arranged in parallel with the conductive wire 142, the horizontal width of the flat cable 140 is widened by this amount, and the horizontal width of the connector is also increased accordingly. Then, there was also the problem that the whole became larger.

In view of the above, according to the first aspect of the invention, one end of the flat cable where the conductive wire is exposed is provided at the connection end, and the shield foil is exposed at the other end of the flat cable. By connecting the holder for fixing the connector with the ground contact also functioning as a connecting wire,
The purpose is to simplify the structure of the connection end of the flat cable. Further, in the invention of claim 2, the connector is configured to achieve the above object.

[0012]

According to the invention of claim 1, at the connection end of the flat cable, a conductive wire is exposed and arranged in parallel on one surface side of the insulating sheet and is shielded on the other surface side. The foil is disposed so as to be exposed, and the flat cable is sandwiched in the connector by the terminal connected to the signal contact and the holder, and the terminal is connected to one surface side and the flat surface is connected to the other surface side. The holder is connected, and the other end of the holder is fixed to the ground contact to connect the ground contact and the shield foil.

According to the second aspect of the present invention, the connector fixed to the printed circuit board having the signal contact provided on the signal circuit terminal and the ground contact provided on the terminal of the ground circuit via the holder has one end having a signal. Fixedly connected to the contacts,
A terminal having the other end connected to the conductive wire of the flat cable and a holder fixedly connected to the ground contact and connected to the shield foil of the flat cable are provided.

[0014]

According to the first aspect of the invention, the printed circuit board is provided with:
Signal contacts provided at the signal circuit terminals and earth contacts provided at the terminals of the earth circuit are provided. A holder attached to the connector is fixed to the ground terminal, and the connector is fixed to the printed circuit board. Also,
The terminal mounted in the connector is connected to the signal contact.

One end of the terminal and one end of the holder are arranged so as to face each other, and the connection end of the flat cable is inserted and sandwiched between them. Thereby, the conductive wire exposed on one surface side of the flat cable is connected to the terminal, and the shield foil exposed on the other side is connected to the holder. Therefore, the shield foil is connected from the ground contact to the ground circuit via the holder, and the charge accumulated in the shield foil flows to the ground circuit of the printed circuit board via the holder.

The connector of the invention of claim 2 is provided with a terminal and a holder. One end of the terminal is fixedly connected to the signal contact provided on the signal circuit terminal of the printed circuit board, and the other end is connected to the conductive wire of the flat cable to connect the signal circuit and the conductive wire. Further, the holder is fixedly connected to a ground contact provided on the ground circuit terminal of the printed circuit board, and is also connected to the shield foil of the flat cable.

[0017]

According to the invention of claim 1, the signal circuit and the conductive wire are connected via the terminal on one surface side of the flat cable, and the earth circuit and the shield foil are connected to the holder on the other surface side. Connected through. For this reason, only one connection end for the signal circuit is provided on one side of the flat cable, and the exposed shield foil contacts the holder on the other side. The structure of can be simplified.
Also, since the terminal for connecting to the shield foil is not arranged in parallel with the terminal for connecting to the conductive wire on one surface side, it is possible to make the flat cable narrow. Accordingly, the connector can be made compact.

According to the second aspect of the invention, the connector having the mounting structure according to the first aspect can be used to make the connector compact by using a flat cable having a narrow width and a simple structure.

[0019]

【Example】

<Embodiment 1> Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS.
Will be described with reference to. The upper surface of the printed circuit board 1 is shown in FIG.
As shown in FIG. 3, a plurality of (eight in this embodiment 1) signal contacts 11 are provided side by side at equal intervals in the width direction of the printed circuit board 1. (Not shown). Also, the signal contact 1
1, one square ground contact 12 that is larger than the signal contact 11 is provided in front of 1 (on the right side in FIG. 1), and this ground contact 12 is connected to the ground circuit (Not shown).

As shown in FIG. 6, the connector 2 includes a housing 21, a plurality of terminals 30 fitted in the housing 21, a holder 40 for fixing the housing 21 to the printed circuit board 1, and a flat cable 60. It is composed of a slide member 50 for fixing.

The housing 21 is made of an insulative synthetic resin material, and as shown in FIGS. 3 and 6, a plurality of cavities 22 into which the terminals 30 are fitted are formed so as to penetrate through both front and rear sides. Further, a supporting portion 23 extending forward from the bottom surface of each cavity 22 is provided, and the upper surface of the supporting portion 23 is flush with the bottom surface of the cavity 22 and serves as a supporting surface 24. In the widthwise central portion of the support portion 23,
A holder mounting recess 25 for mounting a holder 40 described later is formed. An insertion space 26 for the slide member 50 is provided above the support portion 23 and has a large front opening.

As shown in FIG. 3, the housing 21
Locking grooves 27, 27 are formed in the front-rear direction on both left and right sides of the locking groove 27, and a temporary locking protrusion 28 and a main locking protrusion 29 behind the temporary locking protrusion 28 are formed in the locking groove 27. Each of them is provided so that the slide member 50 can be locked at two positions, a temporary locking position and a main locking position.

The terminal 30 is made of a conductive material, is bent in a crank shape as shown in FIG. 6, and the lower surface of the rear end thereof is a contact portion 31 connected to the printed board 1. In addition, the middle portion is arranged along the bottom surface of the cavity 22, and the press-fitting pieces 33, 3 protruding left and right are provided.
3 is provided, and is press-fitted into the side wall of the cavity 22 to be fixedly attached. Further, from the middle portion to the front, a mountain-shaped curve is formed such that the top portion is a pressed portion 34 that is pressed by a slide member 50 described later, and the tip portion that extends further obliquely downward is a conductive wire 62 of the flat cable 60. The contact portion 35 is in contact with. The terminal 30 having such a configuration is fitted from the rear of the cavity 22, and the press-fitting piece 33 is fixed in the cavity 22 by biting into the side wall of the cavity 22, and the tip side is elastically deformable vertically. There is.

As described above, when the terminal 30 is mounted in the cavity 22, the contact portion 31 is disposed flush with the lower surface of the housing 21, and the contact portion 35 at the front end is located above the bearing surface 24. The flat cable 60 is arranged at a position such that the tip end portion of the flat cable 60 can be inserted.
When the slide member 50 is further inserted, the pressed portion 34
Are pushed downward, and the contact portion 35 bites into the flat cable 60.

The holder 40 is made of a conductive material, and as shown in FIG. 6, is formed by upper and lower pieces having a U-shaped cross section. Has been. The upper piece of the holder 40 serves as an upper contact portion 41 that contacts the flat cable 60, and the lower piece serves as a lower contact portion 42 that contacts the ground contact 12. The upper contact portion 41 of the holder 40 thus mounted is mounted flush with the bearing surface 24, and
The lower surface of the lower contact portion 42 is arranged flush with the lower surface of the housing 21. The lower contact portion 42 thus arranged and the contact portion 31 of the terminal 30 described above are connected to the printed circuit board 1
Mounted on the ground contact 12 and the signal contact 11 provided in the above, and further fixed by soldering,
The connector 2 is fixed to the printed circuit board 1.

The slide member 50 is made of an insulative synthetic resin material, and as shown in FIGS. Arm portions 51, 51 are provided. A locking protrusion 54 is formed on the inner side of the arm portion 51, and the locking protrusion 54 serves as the temporary locking protrusion 2 of the housing 21.
8 is engaged with the main locking protrusion 29, the slide member 50 is held at the temporary locking position (the state shown in FIG. 4) with respect to the housing 21, and the slide member 50 is further pushed and locked. When the protrusion 54 is fitted into the main locking protrusion 29, it is held at the main locking position (state shown in FIG. 5). Then, when the slide member 50 is in the temporary locking position, as shown in FIG. 7, the tip of the slide portion 52 is disposed above the pressed portion 34 in the insertion space 26, and when in the main locking position. , The pressed portion 34 as shown in FIG.
Is pressed, the contact portion 35 moves downward and bites into the inserted flat cable 60.

As shown in FIG. 9, the flat cable 60 has eight narrow foil foils arranged in parallel on the upper surface of an insulating central insulating sheet (corresponding to the insulating sheet in claim 1). Conductive wires 62 for signal transmission, and an insulating upper insulating sheet 61 are further attached on these conductive wires 62, and a shield foil 64 and an insulating insulating film are provided on the lower surface of the central insulating sheet 63. The lower insulating sheet 65 is attached, and is configured to have flexibility in which five layers are laminated as a whole. At the connection end, which is the tip of the flat cable 60, the upper insulating sheet 61 and the lower insulating sheet 65 are removed, and the conductive wire 62 and the shield foil 6 are removed.
4 is exposed vertically.

Next, the mounting process in this embodiment will be described. As shown in FIG. 7, the terminal 30 and the holder 40 are attached to the connector 2, and the slide member 50 is fixed to the temporary locking position. In order to mount the connector 2 in such a state on the printed circuit board 1, the printed circuit board 1 is arranged so that the contact portion 31 of each terminal 30 contacts the respective signal contact 11 as shown in FIG. The lower contact portion 42 of the holder 40 is brought into contact with the ground contact 12 on the ground contact 12. In this state, the contact portion 31 of each terminal 30 is soldered to the signal contact 11, and the lower contact portion 42 is soldered to the ground contact 12, so that the connector 2 is fixed on the printed circuit board 1. As a result, the terminal 30 and the signal contact 11, and the holder 40 and the ground contact 12 are electrically connected.

In order to connect the flat cable 60 to the connector 2 fixed in this way, the connecting end of the flat cable 60 is inserted under the slide member 50 at the temporary locking position shown in FIG. It is arranged between the upper contact portion 41 of the holder 40 and the contact portion 35 of the terminal 30. Then, when the slide member 50 is pushed into the main locking position, as shown in FIGS. 8 and 9, the pressed portion 34 of the terminal 30 is pressed by the slide portion 52, and the contact portion 35 exposes the flat cable 60. The signal contact 11 is connected to the conductive wire 62 via the terminal 30 by being pressed against the conductive wire 62. At the same time, the shield foil 64 exposed on the lower surface side of the flat cable 60 is connected to the upper contact portion 4 of the holder 40.
1 is pressed and connected to the ground contact 12 via the holder 40. As a result, even if electric charges that cause noise are generated in the shield foil 64, they flow from the ground contact 12 to the ground circuit, and the noise is prevented from adversely affecting the equipment.

As described above, in the first embodiment, the holder 40 for fixing the connector 2 to the printed circuit board 1 is used as a means for causing the charge of the shield foil 64 to flow to the ground circuit. To flat cable 60
Since the dedicated grounding terminal is not provided in parallel with the conductive wire, the flat cable 60 can have a narrow width, and therefore the connector 2 can also be small in size. Further, at the connection end of the flat cable having the conventional structure, the shield foil end piece 1 made of the shield foil is used.
It was necessary to provide 44a at the same pitch as the conductive wires, but in the first embodiment, it is sufficient that the lower insulating sheet 65 is removed and the shield foil 64 is exposed. Since it is not necessary to provide the piece 144a, the flat cable 60 can be easily manufactured.

In the first embodiment, the procedure of fixing the slide member 50 to the connector 2 at the temporary locking position and then fixing it to the printed circuit board 1 has been described. However, after the connector 2 is fixed to the printed circuit board 1, the slide member 50 is slid. The member 50 may be attached to the temporary locking position.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. The second embodiment is an example in which the structure of the holder is different from that of the first embodiment, and the description of the parts common to the first embodiment will be omitted.

The holder 75 of the second embodiment is made of a conductive material and has a wide plate shape as shown in FIG.
Both ends thereof are bent downward to form a pair of left and right leg portions 76, 76, and side surfaces of each leg portion 76 are formed with retaining pieces 77 that are cut and raised inward. As shown in FIG. 12, the housing 70 is provided with a holder mounting recess 72 which is stepped and lower than the front end edge of the cavity 71. The holder mounting recess 72 is provided with a holder receiving surface 73 on the upper surface of which the holder 75 is covered, and leg insertion grooves 74, 74 opening to the lower surface of the housing 70 are provided at both left and right ends. (See Figure 11). In the leg insertion groove 74, the leg portion 76 of the holder 75 is inserted.
Is inserted and is press-fitted and fixed by the retaining piece 77. Further, the lower end surfaces of both leg portions 76 are flush with the lower surface of the housing 70.

On the printed circuit board 80, a row of signal contacts 82 to which the terminals 30 are connected, and ground contacts 81 connected to the above-mentioned ground circuit (not shown) on the left and right rear portions thereof.
And fixed contacts 81a that are not connected are provided on the left and right. The ground contact 81 extends longer than the row of signal contacts 82 and corresponds to the leg portion 76 of the holder 75.

Next, the operation of the second embodiment will be described. In the second embodiment, to attach the connector 7 to the printed circuit board 80, the connector 7 is mounted on the printed circuit board 80 so that the contact portions 31 of the terminals 30 come into contact with the respective signal contacts 82 as shown in FIG. Then, the lower ends of the legs 76, 76 of the holder 75 are brought into contact with the ground contact 81 and the fixed contact 81a. In this state,
Each contact portion 31 is soldered to the signal contact 11, and the lower end portion of the leg portion 76 is soldered to the ground contact 81 and the fixed contact 81a to fix the connector 7 on the printed circuit board 80. As a result, the terminal 30 and the signal contact 82,
The holder 75 and the ground contact 77 are electrically connected. The configuration for connecting the flat cable 60 is the same as that of the first embodiment, and the slide member 50 is set to the temporary locking position as shown in FIG.
After inserting the connection end portion of 0, the slide member 50 is pushed into the main locking position as shown in FIG. 13 to connect the flat cable 60. As a result, as shown in FIG. 14, the terminal 30 presses the connection end of the flat cable 60 to connect to the conductive wire 62, and the holder 75 presses to the shield foil 64.

Also in the second embodiment, as in the first embodiment, the holder 40 for fixing the connector 2 to the printed circuit board 1 is used as a means for flowing the electric charge of the shield foil 64 to the earth circuit, as in the prior art. Since the flat cable 60 is not provided with a dedicated grounding terminal in parallel with the conductive wire, the flat cable 60 can be made narrow. Further, since it is not necessary to provide the shield foil end piece 144a at the connection end of the conventional flat cable, the flat cable 60 can be easily manufactured.

In the second embodiment, the leg portions 76, 76 provided on both sides of the holder 75 are fixed to the ground contact 81 and the fixed contact 81a.
The connector 2 can be securely fixed to the.

<Third Embodiment> Next, a third embodiment of the present invention will be described with reference to FIGS. In the third embodiment, the positional relationship among the slide member, the terminal, the flat cable, and the holder inside the connector is turned upside down as compared with the case of the second embodiment, and the description of common parts is omitted and different parts are attached. Explain. As shown in FIG. 16, the housing 90 of the connector 9 is provided with a cavity 91 and an insertion space 92 continuously from the cavity 91, and a holder mounting recess 93 is formed above the insertion space 92.

As shown in FIG. 19, the holder 95 has a wide plate-shaped main body 95a and a pair of plate-shaped legs 95b, 95b protruding downward from both ends of the main body 95a.
And plate-shaped fixing portions 95c, 95c protruding inward from the lower ends of the both leg portions 95b, 95b.
When attached to the housing 90, the main body 95
a constitutes the upper surface of the insertion space 92, and the fixing portion 95
The lower surface of c is arranged flush with the lower surface of the housing 90 (not shown).

The portion of the terminal 100 located in the insertion space 92 is curved in an inverted mountain shape which bulges downward, and the contact portion 101 at the front end thereof is flat cable 120 against the lower surface of the main body portion 95a of the holder 95. And the pressed portion 102 protruding to the bottom is spaced from the lower surface of the insertion space 92 by a distance smaller than the thickness of the pressing portion 111 of the slide member 110. It is arranged. The terminal 100 is attached to the cavity 91 by press fitting. The slide member 110 can be held at a temporary locking position where the pressing portion 111 does not come into contact with the terminal 100 (see FIG. 16), and is pushed in from this temporary locking position and inserted under the terminal 100. It can be fixed at the main locking position.

As shown in FIG. 18, the flat cable 120 has a structure in which the flat cable 60 of Example 1 is turned upside down, and includes a central insulating sheet 123 and a conductive wire 124 for signal transmission attached to the lower surface thereof. , These conductive wires 12
4, a lower insulating sheet 125 attached below the shield 4, a shield foil 122 attached to the upper surface of the central insulating sheet 123, and an upper insulating sheet 12 attached to the upper surface of the shield foil 122.
It consists of 1. At the connection end of the flat cable 120, the conductive wire 124 is exposed on the lower surface side, and the shield foil 12
2 is exposed on the upper surface side. In addition, the printed circuit board 130
Includes a ground contact 131 and a fixed contact 131 of the ground circuit.
A pair of left and right are provided in front of the row of signal contacts 132, and these contacts 131, 131a are located so as to correspond to the fixed portions 95c, 95c of the holder 95.

Next, the operation of the third embodiment will be described.
In order to fix the connector 9 to the printed circuit board 130, the terminal 100 is connected to the signal contact 132 as in the second embodiment.
The fixing portion 95c of the holder 95 is fixed to the ground contact 131 and the fixed contact 131a by soldering. As a result, the connector 9 is connected to the printed circuit board 13
It is fixed to 0, and the holder 95 and the ground contact 131 are fixed.
And are electrically connected to.

Then, after the connection end of the flat cable 120 is inserted into the insertion space 92 of the connector 9 and inserted between the contact portion 101 of the terminal 100 and the lower surface of the main body 95a of the holder 95 (FIG. 16). Slide member 1)
Push in 10 to fix at the final locking position. As a result, the pressing portion 111 causes the pressed portion 102 of the terminal 100 to be pressed.
Is pressed upward to press the contact portion 101 into pressure contact with the conductive wire 124, and the flat cable 120 is pressed upward to clamp the flat cable 120 with the holder 95 (see FIG. 17). This allows
Each terminal 100 is electrically connected to the conductive wire 124, and the shield foil 122 is in contact with the lower surface of the holder 95 to be electrically connected (see FIG. 18). As a result, the electric charge of the shield foil 122 is transmitted from the upper surface of the shield foil 122 to the lower surface of the main body 95a of the holder 95, passes through the leg portions 95b and the fixed portions 95c, and then is connected to the ground contact 131.
Through the ground circuit. As a result, it is possible to prevent the occurrence of noise that may adversely affect the device or cause the device to malfunction.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment.

FIG. 2 is a perspective view of the slide member according to the first embodiment in a temporary locking position.

FIG. 3 is a partially cutaway plan view of the sliding member of Example 1 in a separated state.

FIG. 4 is a partially cutaway plan view showing a state before the flat cable of Example 1 is inserted.

FIG. 5 is a partially cutaway plan view showing a mounting state of the first embodiment.

FIG. 6 is a cross-sectional view of the sliding member according to the first embodiment in a separated state.

FIG. 7 is a cross-sectional view of the first embodiment at a temporary locking position.

FIG. 8 is a cross-sectional view of the first embodiment in a fully locked position.

9 is a partially enlarged sectional view of FIG.

FIG. 10 is a plan view showing the positional relationship of attaching the connector to the printed board according to the first embodiment.

FIG. 11 is an exploded perspective view of the second embodiment.

FIG. 12 is a cross-sectional view showing a state of a temporary locking position according to the second embodiment.

FIG. 13 is a cross-sectional view showing a state of a full locking position according to the second embodiment.

14 is a partially enlarged sectional view of FIG.

FIG. 15 is a plan view showing a positional relationship of mounting a connector on a printed board according to a second embodiment.

FIG. 16 is a sectional view showing a state of a temporary locking position according to the third embodiment.

FIG. 17 is a cross-sectional view showing the state of the third embodiment in a final locking position.

FIG. 18 is a partially enlarged sectional view of FIG.

FIG. 19 is a front view of the holder according to the third embodiment.

FIG. 20 is a plan view showing a positional relationship of attaching a connector to a printed board according to a third embodiment.

FIG. 21 is a partially cutaway plan view of a conventional flat cable.

FIG. 22 is a sectional view of a conventional flat cable.

[Explanation of symbols]

 1 ... Printed circuit board 2 ... Connector 11 ... Signal contact 12 ... Ground contact 30 ... Terminal 40 ... Holder 60 ... Flat cable 62 ... Conductive wire 63 ... Central insulation sheet (insulation sheet) 64 ... Shield foil

Claims (2)

[Claims] 1. A connector is fixed to a printed circuit board having a signal contact provided on a signal circuit terminal and an earth contact provided on a terminal of an earth circuit via a holder, and a conductive wire is connected to the connector. In a mounting structure of a flat cable to a printed circuit board for connecting a flat cable in which a shield foil is laminated through an insulating sheet, the connection end portion of the flat cable has one surface side of the insulating sheet. Conductive wires are exposed and arranged side by side, and the shield foil is exposed and arranged on the other surface side, and the flat cable is formed in the connector by a terminal connected to the signal contact and the holder. , The terminal is connected to the one surface side, and the holder is connected to the other surface side,
The other end of the holder is fixed to the ground contact to connect the ground contact and the shield foil, and a flat cable mounting structure to a printed circuit board. 2. A connector fixed through a holder to a printed circuit board having a signal contact provided at a signal circuit terminal and a ground contact provided at a ground circuit terminal, one end of which is fixedly connected to the signal contact. A printed circuit board connector is provided with a terminal whose other end is connected to a conductive wire of a flat cable, and a holder which is fixedly connected to a ground contact and connected to a shield foil of the flat cable.